Wurtzilite.



' 20 of treating the material.

UNITED srrATEs WILLIAM F. DOERFLINGER ANI) LEON H. BUC

PATENT OFFICE.

K, OF NIAGARA FA LLS, NEW YORK. A SSIGNORS.,

BY SSGNMENTS, TL) MARCUS SlIl\l]:), 0I" NEW YORK. N. Y., .AND ISDWA ltD F. C.

YOUNG, OF JERSEY CITY, NEW JERSEY.

WURTZILITE Specification of Letters Patent.

Patented Nov. 10, 1908.

Serial No.

treating wurtzilite and its novelty consists in the several successive steps of the process employed and the product which is the re sult thereof.

In an application for Letters Patent of the United States filed by us January 26, 1906,

Serial No. 297,970 'we originally claimed the subject matter of this application but at the requirement of the Patent Ollie-e we limited that application to a particular method only This application therefore is a division of the former one and will relate to matters not allowed in the former applic-ation.

Briefly, the method described in the al lowed application consisted in heating the wuitzilit-e 1n the presence of a suitable fusible resinous substance which is soluble in turpentine, for instance, gilsonite, until a homogcneous liquid is formed which is allowed lo cool and then is dissolved in turpentine and linseed oil to form a coating coi'npoi'lnd which is acid proof and of good wearing;r properties.

We have discovered that iu place oi the gilsonite, or similar single rcsinous sub 5 stance, we may use as the vehicle for the conversion of the wurtzilite, the product which is the result of the patented process above re ferred to. For instance, in that patent we describe as a preferred example of our 40 method the use of nearly equal quantities of wurtzilite and gilsonite If now we repeat the process with 50 parts of the product and 100 parts of' wurtzilite, wc get a new product containing a high proportion of wurtzilite and if we repeat the process the third time, with, say parts of the second. product .and 100 parts of the wurtzilite, the resulting product has a yet higher proportion of wurtzilte. This is a result which was 50 wholl unexpected and is important because it ena les us to produce a product havinA an unusual pro ortlon of wurtzilite and yet w lich has all of t e advantageous ualities of thc Ifirst product. A s wurtzilite as high electrical insulating properties, this is an important feature of our ii'wentnfn. The process grec thus increasing the proportion ol' Wurt- Zilite in the'iinnl product.

The 'product ol' the rmt-tinted process or of the repetition oi the samoin the nuuinor ust described has been l'ound to bc soluble not onlyiu turpentine, but also in carbon tetrachlorid, tar hydrocarbons, ter ienos, resin spirits, chloroform, carbon disuiiid and the petroleum hydrocarbons in about thc order named, carbon tetrachlorid being the best and the petroleum hydrocarbons the poorest of the various solvents 1uentione .l.

In practice, alter the wnversion of the wurtzilito into the soluble forni, as described in the patented prmwoss, or in the re'ietition thereof, the product is broken up. and slowly heated in the selected solvent containci'l in a suitable vessel. (')i course it will be understood that some of these solutions would be valuable in certain situations where the others would not. For instance the tur pentine solution naturally inllammable while the tetrachlorid solution is not.

W'e describel linseed oil as a roper and preferred form of oil to be emp oyed with l turpentine. Lil 1eed oil is merely an exl uniple of oils which may be used in this con- .neet-ion. For instance, when turpentine is used, linseed maybe used, or rape seed, sunflower seed, cotton seed and similar ve etable oils, or even. the mixture of vegeta le and animal oils which is placed on the market under the name of lucol. Someof these oils would not be suitable with. some of the solvents above mentioned and consequently when any particular solvent is em )loyed that oil should. be chosen which will best harmonize with it.

Our invention may be carried yet further. Before the wurtzilite is allowed to cool and while it is yet iu a li( uid or semi-liquid state mixed with the fused gilsonite, there may be added to and incor )ore-ted with the mass a pro )ort-ion of rubber, guttapcrcha, wax, gli so as to roduce novel products, especially adapted or specific purposes. Instead of adding such materials to the melted wurtzilite, it may be allowed to cool, broken up into small particles and dissolved in any one of the suitable solvents named and then y fusible resins and selected pigments,-

niay be repeated oven beyond the third deto it before coolin there may be added to the solution so formed, rubber, gutta ercha, wax, fusible resins and pigments. f these are soluble in the selected solvent employed the result may be used for a great variety of purposes. If they are not so soluble this may interfere with the use of the product, as a coating material, when a plied with a brush, but will not otherwise 1be disadvanta eous. ln fact the fused and melted wurtzi ite whether of the first or subsequent degrees can be used as the basis of an enormous variety of useful products.

What we claim as new is 1. The rocess of treating wurtzilite, which consists in heatingit in the presence of a suitable fusible resinous substance until homogeneous fusion takes lace, and heating a new lot of wurtzilite in tlie presence of the fused compound until homogeneous fusion again takes place.

2. The recess of treating wurtzilite, which consists in heating it in the presence of a suitable fusible resinous substance until homogeneous fusion takes place, heating a new lot of wurtzilite in the presence of the fused compound until homogeneous fusion again takes place and successively repeating the o eration with fresh lots of wurtzilite,

3. he process of' treating wurtzilite, which consists in heating it in the presence of a suitable fusible resinous substance until homogeneous fusion takes place, heating a new lot of wurtzilite in the presence of the` fused compound until homogeneous fusion again takes place and adding to it before cooling a gum, as india rubber, soluble in any solvent inv which the said resinous substance is soluble, allowing the mass to cool and dissolving the same in the selectedsolventand adding oil thereto to form a coating compound.

4. The 'process of treating wurtzilite, which consists in heating it in the presence of a suitable, fusible resinous substance until homogeneous fusion takes place and adding a gum, as india rubber, soluble in any so vent in which the said resinous substance is soluble.

5.' The recess of treating wurtzilite, which consists in heating it in the presence of a suitable, fusible resinous substance ,until 'homojeneous fusion takes place and adding to it efore cooling a gum, as india rubber, soluble in any solvent in which the said resinous substance is soluble, allowing the mass to cool and dissolving the same in the selected solvent. p E. i'he recess of treating wurtzilite, which consists in heating it in the presence of a suitable fusible resinous substance until homogeneous fusion takes placeJ heating a new lot of wui'zilite in the 'presence of the fused compound until homogeneous fusion again takes place and adding to it before cooling a gum, as india rubber, soluble in any solvent in which the said resinous substance is so luble.

7. The process of treating wurtzilite, which consists in heating it in the presence of a suitable fusible resinous substance until homogeneous fusion takes place, heating a new lot of wurtzilite in the presence of the fused compound until homogeneous fusion again takes place and adding to it before cooling a gum, as india rubber, soluble in any solvent in which the said resinous substance is soluble, allowing the mass to cool and dissolving the same in the selected solvent.

8. 'lhe process of treating wurtzilite, which consists in heating it in the presence of a suitable fusible resinous substance until homogenous fusion takes place, heating a new lot of wurtzilite in the presence of the fused compound until homogeneous fusion again takes place and successively re eating the o eration with fresh lots of Wurtzi ite until a iiigh proportion of wuitzilite is secured and adding to it before cooling a gum, as india rubber, soluble in any solvent in which the said resinous substance is soluble.

9. The process of treating wurtzilite, which consists in heating it in the presence of a suitable fusible resinous substance until homogeneous fusion takes place, heating a new -lot of wurtzilite in the presence ofthe fused compound until homogeneous fusion again takes place and successively re eating the operation with fresh lots of wurtzillite un til a igh proportion of wurtzilite is secured and adding to it before cooling a gum, Aas india rubber, soluble in any solvent in which the said resinous substance is soluble, allowing the mass to cool and dissolving the same in the selected solvent. u

10. The process of treating wurtzilite,

which consists in heating it in the presence .of a suitable fusible resinous substance until homogeneous fusion takes lace and heating a new lot'of Wurtzilite in t e presence of the iio fused compound until homogeneous fusion again takes place, allowing the compound to cool and dissolving it when cool in a suitable homogeneous fusion takes place, heating a new lot of wurtzilite in the presence of the fused compound until homogeneous fusion again takes plgtce and successivelyrepeatin the I allowing the compound to cool and dissolvoperatmyith fresh lots of wurtzilite a lowing it when cool 1n a suitable liquid vehicle in thebompl'jund to cool and dissolving it and adding oil thereto to form a coating l5 wen cool in d. suitable liquid Vehicle. com o und. 7

5 13. The process of treating wurtziliteJ ltness our hands this 1st 4da, of July which consists in heating it in the presence 1907, at the city of New York, in the county of s. suitablefusible resinous substance until and State of New York. homogeneous fusion takes place, heating a WILLIAM F. DOERFLINGER.

. new lot of Wurtzilite in the presence of the LEON H. BUCK.

10 fused compound until homogeneous fusionv Witnesses:

again takes place and successlvely repeating CHAs. LUNDELIUs, t e operation with fresh lots of wurtzilite, KATHRYN CALDWELL. 

